There's some great stuff coming out later this year for the DS but with the Wii soon upon us (not to mention all the great stuff on other formats *cough.e.g.FFXIIcough*) I know where most of my gaming hours will be; the Wii launch lineup is looking amazing.
Out of the DS titles I'll have to make time to play Zelda, FF:CC, FF3 and Diddy Kong Racing (though I'd be suprised if DKR came out this year knowing Rare!).
Oh and I can't forget Elite Beat Agents!
And if I wasn't going to be busy enough, the Nibris website lists Raid Over the River (DS SHMUP) for a 2006 release though media sites have said it is coming out in 2007. This is one game I am looking forward to an awful lot so the sooner the better IMO! (p.s They are even planning a sequel to the game on the Wii after their first project 'Sadness'). ^^
Come to think about it... I think I must be one of the few people not really interested in Yoshi's Island 2, the games in the series have always looked nice but the gameplay is kinda meh. Maybe I'm just not seeing something... they're good but there's some better stuff out there lol.
Like for example if there's one platformer I have to play this year it's going to be Super Paper Mario for the GC! OMG that game is gonna be awesome! *Squeals*
Edit: Just remembered Pokemon Pearl and Diamond are due out in Japan at the end of September! ARGH! SO MANY GAMES!!!!!! >_<